Though Miley Cyrus and Liam Hemsworth breaking up wasn't too shocking, the announcement threw the world for a loop since both parties -- especially Cyrus -- seemed to be in denial for so long. Now, new details behind the split have come to light, and apparently the breakup was even more of a longtime coming than most of the world realized.

Us Weekly reports that Hemsworth pursued 'Mad Men' star January Jones before splitting with Cyrus, and that they've had the hots for one another since February when they allegedly hooked up at an Oscars party. Jones, who has a bit of an ice queen rep, has reportedly been "consoling" Hemsworth during the end of his and Cyrus' relationship.

What was she giving him a shoulder to cry on about? He allegedly complained about Cyrus' rebellious new image, because it wasn't what he signed up for when they first got together, and was humiliated by her performance at the 2013 MTV Video Music Awards -- though sources say they were pretty much dunzo before then anyway.

"Miley and Liam were already pretty much broken up at that point, but when he saw her performance and the backlash it created, it was the nail in the coffin," a source told Radar Online. "That was all he needed to finally break up with Miley once and for all. He was embarrassed, disgusted and mortified by her performance."

It’s not just Liam that Miley is pushing away…his entire team is urging him to part ways with her because she’s nothing but negative for his reputation and career,” the source told Radar.

Jones wasn't necessarily the only sidepiece Hemsworth's been eyeing, either. Life & Style (via Radar Online) reports that Hemsworth and Mexican actress Eiza Gonzalez hit it off at the Toronto International Film Festival. A spy noted, "They never left each other’s sides.They were with a few people and spent a few minutes at the VIP DJ stage table. They then headed back to a more private VIP bungalow cabana near the pool. They had drinks and talked in the bungalow. They left together with the rest of the group around 2AM."

What's more, Hemsworth's entire team, as well as his family, have been encouraging him to break away from the tongue-wagging starlet for a while. The source explained, "Liam is a serious actor with a growing career, while Miley has just turned into a joke." Ouch!

Even Elton John has weighed in, saying, "I look at Miley Cyrus and I see a meltdown waiting to happen. And she's so young! But she's got two records in the top 20, so who is going to stop her?"

Still, there may be a more innocuous explanation, one that afflicts most young couples. A source said, "There was a time that they had a lot in common and enjoyed being together. But in the last year or so, they grew apart and tried desperately to make it work, but it just didn't and it won't. This breakup is the best thing for both of them."

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